Direct exchange is not new. It also does not have the ability to modulate refrigerant flow (orafices are 70ft under ground!). I believe huge EE opportunity comes from load matching - I suspect these new inverter geo units will be dramatically altering how closed loop is done.
The geo business is like any other, without tracking there is no accountability. Without accountability everything becomes a race to the bottom. What corners can be cut to be able to offer the lowest bid.
This may mean a homeowner spends $2000 per year on energy instead of $800, but all they remember is the $4500 they were spending on oil.
What a terrible missed opportunity. Nobody really is to blame, it's a chain with links missing.
Tracking results will expose which emperors have no clothes, and provide a metric that allows contractors to compete on a quality metric that is actually measurable.
Holy crap. That goes deep in the ground?
Be careful what you say doesn't exist, next week you'll be wrong.